transbronchial needle aspiration
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trans·bron·chi·al nee·dle as·pi·ra·tion(TBNA) (trans-brong'kē-ăl nē'dĕl as'pir-ā'shŭn)
1. Biopsy of a structure or region adjacent to a bronchus by means of a needle introduced through a bronchoscope.
2. Diagnostic procedure used in cytology and histology studies of intrathoracic and respiratory disease.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
transbronchial needle aspirationAbbreviation: TBNA
A method of sampling abnormal tissue masses found in the mediastinum. A needle is guided into the mass during bronchoscopy, and cells are dislodged with a sawing motion. Suction is applied to gather specimens. TBNA is typically used to determine whether the mass represents a malignancy, such as a bronchogenic carcinoma or lymphoma.
See also: aspiration
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